using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using PSTW_CentralSystem.DBContext;
using PSTW_CentralSystem.Models;
using PSTW_CentralSystem.Areas.MMS;
using System.Linq;
using QuestPDF.Fluent;
using PSTW_CentralSystem.Areas.MMS.Models.PDFGenerator;
using System.Globalization;
using System.IO;

namespace PSTW_CentralSystem.Areas.MMS.Controllers
{
    [Area("MMS")]
    //[Authorize(Policy = "RoleModulePolicy")]
    public class MarineController(MMSSystemContext context) : Controller
    {
        private readonly MMSSystemContext _context = context;
        private const string PhotoBasePath = @"\\192.168.12.42\images\marine\manual_tarball";

        public IActionResult Index()
        {
            return View();
        }

        public IActionResult TarBallForm()
        {
            var marineTarballs = _context.MarineTarballs
                .Where(t => t.StationID != "1")
                .Select(t => new
                {
                    t.Id,
                    Date = t.DateSample.ToString("yyyy/MM/dd"),
                    Station = t.StationID
                })
                .ToList();

            // Debugging
            foreach (var item in marineTarballs)
            {
                Console.WriteLine($"Date: {item.Date}, Station: {item.Station}");
            }

            return View(marineTarballs);
        }

        public IActionResult GenerateReport(int id)
        {
            return GeneratePdfResponse(id, true);
        }

        public IActionResult ViewPDF(int id)
        {
            return GeneratePdfResponse(id, false);
        }

        private IActionResult GeneratePdfResponse(int id, bool forceDownload)
        {
            Console.WriteLine($"Requested ID in {(forceDownload ? "GenerateReport" : "ViewPDF")}: {id}");

            try
            {
                var tarballData = (from marine in _context.MarineTarballs
                                   join station in _context.MarineStations
                                   on marine.StationID equals station.StationID
                                   join state in _context.States
                                   on station.StateID equals state.StateID
                                   where marine.Id == id
                                   select new
                                   {
                                       state.StateName,
                                       marine.StationID,
                                       station.LocationName,
                                       marine.Longitude,
                                       marine.Latitude,
                                       marine.DateSample,
                                       marine.TimeSample,
                                       marine.ClassifyID,
                                       TarBallYes = marine.ClassifyID != "NO",
                                       TarBallNo = marine.ClassifyID == "NO",
                                       IsSand = marine.ClassifyID == "SD",
                                       IsNonSandy = marine.ClassifyID == "NS",
                                       IsCoquina = marine.ClassifyID == "CO"
                                   }).FirstOrDefault();

                if (tarballData == null)
                {
                    return NotFound("The specified record was not found.");
                }

                // Generate photo paths
                var photoBaseName = $"{tarballData.StationID}_{tarballData.DateSample:yyyyMMdd}";
                var photoPath1 = GetValidPhotoPath(photoBaseName + "_1.jpg");
                var photoPath2 = GetValidPhotoPath(photoBaseName + "_2.jpg");
                var photoPath3 = GetValidPhotoPath(photoBaseName + "_3.jpg");
                var photoPath4 = GetValidPhotoPath(photoBaseName + "_4.jpg");

                var pdfDocument = new TarBallPDF(
                    tarballData.StateName,
                    tarballData.StationID,
                    tarballData.LocationName,
                    tarballData.Longitude,
                    tarballData.Latitude,
                    tarballData.DateSample,
                    tarballData.TimeSample,
                    tarballData.ClassifyID,
                    tarballData.TarBallYes,
                    tarballData.TarBallNo,
                    tarballData.IsSand,
                    tarballData.IsNonSandy,
                    tarballData.IsCoquina,
                    photoPath1,
                    photoPath2,
                    photoPath3,
                    photoPath4
                );

                var pdf = pdfDocument.GeneratePdf();
                Console.WriteLine("PDF generation completed.");

                if (forceDownload)
                {
                    var fileName = $"TbReport_{tarballData.StationID}_{tarballData.DateSample:yyyyMMdd}.pdf";
                    return File(pdf, "application/pdf", fileName);
                }

                return File(pdf, "application/pdf");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error in {(forceDownload ? "GenerateReport" : "ViewPDF")}: {ex.Message}");
                return StatusCode(StatusCodes.Status500InternalServerError,
                    $"An error occurred while {(forceDownload ? "generating" : "viewing")} the PDF. {ex.Message}");
            }
        }

        private string GetValidPhotoPath(string photoName)
        {
            var fullPath = Path.Combine(PhotoBasePath, photoName);
            return System.IO.File.Exists(fullPath) ? fullPath : null;
        }

        private string? FindPhoto(string folderPath, string searchPattern)
        {
            try
            {
                var files = Directory.GetFiles(folderPath, searchPattern);
                return files.Length > 0 ? files[0] : null;
            }
            catch
            {
                return null;
            }
        }
    }
}